Last I looked the "part" (piece of thin square tubing) was only about $100. But, No Brackets. That's where Welding comes in, and probably better to Cut the Old Bracket off, Grind Clean, and Re-Weld, than to find or make new brackets that have the original bolt pattern but still have to be welded.
Note that in years of use, the wet sewer hoses will cause the bumper to rust from the inside and fail again. I carry a couple longer hoses in the bumper, but only use it when the shorter one that I have in a plastic carrier won't reach.